Like of @Astropartigirl's tweet · Jamie Tanna

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If you touch two CLEAN blocks of the same metal together in space, they weld! Atoms in solid metals move a bit. Touch two clean surfaces together, and the atoms can't tell they're in different blocks so they become one group of atoms, ie ONE SOLID. (Gif: homemadetools.net/forum/cold-wel…)
Sophia Gad-Nasr (@Astropartigirl)Fri, 10 Jul 2020 21:52 +0000

Sat, 11 Jul 2020 11:30 by Jamie Tanna .

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